PyPI/mistune CVE-2026-59925: high 7.5, EPSS 0.64%
Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, long sequences of well-formed double-asterisk or triple-asterisk emphasis pairs around a character cause quadratic work
Action: Upgrade mistune to 3.3.0 or later.
pip install mistune==3.3.0Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 3.3.0 | - |
Fixed versions
| 3.3.0 |
Sources
- osv: PYSEC-2026-2213
- https://github.com/lepture/mistune/releases/tag/v3.3.0
- https://github.com/lepture/mistune/commit/5de41fb8e527004dbc363e047a3c380c9288c74f
- https://github.com/lepture/mistune/security/advisories/GHSA-4j32-57v6-6g45
CVE-2026-59925 · published · modified · JSON